The fact you want to keep the cost under $750 eliminates most of the premier customs...at least for a new one. On top of that you don't really even know what you want. I'm not trying to be discouraging, but it's a roll of the dice ordering something you aren't familiar with and pretty sure of.
$750 in the classifeds will buy most if not all of the premier bows that are out of your range if bought new. And you don't have to wait 6 months to almost two years to get it..
The classifieds is the best place to find out exactly what you want in a custom. Buy, sell, trade, and explore. Assuming you don't trash the bow while you have it there will be very little value lost when you go to resell.
A premier custom from any of the top bowyers will be a great bow. It might not be a great bow for you though, each has it's own personality.
To end with an opinion, if you want a recurve my favorites are Blacktail, Schafer, and Dale Dye. You pick the order...and yeah, they're all different.